NetApp built-in packet capture

3people_netapp_blocks_hiresI first had to do this at the direction of NetApp tech support.  Ever since, I found myself searching my email for it so I could use it again and again.  I finally took the hint and decided to post it here for my reference – but maybe you could use it as well. Oh, and copy it to Evernote, too.

They way I use this, as you might expect, is to start the capture, perform the operation that’s failing, and then stop the capture.  So as not to capture too much traffic and therefore have to wade through all of it, I try to perform those steps rather quickly.  But then again, if you know a few useful features of Wireshark, you can get around in the capture file pretty easily.  So here you are.

filer> pktt start all -d /etc/crash

<perform the operation that fails here>

filer> pktt dump all
filer> pktt stop all

Read the rest of this entry »

Add a VLAN to a UCS blade via the CLI

cisco_ucsSo my UCS Manager GUI was having certificate problems today in my test lab and I really wanted to get something done. I think I need to update UCSM from 2.0(1s) to one of the latest, but that’s a project in itself, especially if I can’t just click-click-click my way through. What I really wanted to do was add a couple existing VLANs to the vNIC of an ESXi host on a blade (so I could vMotion some stuff around). Of course, with the GUI, it’s a few clicks. Without the GUI (and not knowing where to go in the CLI), I was at a bit of a loss.

The UCS CLI guide wasn’t helpful as it was more for managing the hardware or upstream configs – not so much for what would seem like a task made for UCSM. So to get on with it, let me share the quick config for adding VLANs to vNICs. This post actually got me in the ballpark (just search for “vlan” in the post), but from there, I was on my own!

Read the rest of this entry »

New to NetApp? Here are the default Snapshot settings explained for ONTAP 8.1

Snapshots are enabled by default when a volume is created.  They follow the schedule as seen from the CLI command snap sched: 0 2 6@8,12,16,20


and from the System Manager GUI.  Note the default Snapshot Reserve is 5% and that the checkbox for Enable scheduled Snapshots is checked by default.

Read the rest of this entry »

Chinwag with Mike Laverick (@Mike_Laverick)

I was honored recently by being invited by Mike Laverick to be a guest on his Chinwag. Now, I knew what *the* Chinwag was, but I honestly didn’t know *what* a chinwag was. I had to look it up. It’s basically a chat – makes sense, right? You can find it on Mike’s blog, here. Our chat is below.

I’d like to thank Mike wholeheartedly for thinking of me and giving me the “publicity” that comes with being a guest on his Chinwag. It was truly an honor to “meet” him, as virtual as it was. I look forward to meeting him in person one day.